package com.barcode.client.android.share;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.BaseColumns;
import android.provider.Browser;
import android.provider.ContactsContract;
import android.text.ClipboardManager;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import com.barcode.client.android.Contents;
import com.barcode.client.android.Intents;
import com.fit.demo.R;
import com.google.zxing.BarcodeFormat;

public final class ShareActivity extends Activity {

	private static final String TAG = ShareActivity.class.getSimpleName();

	private static final int PICK_BOOKMARK = 0;
	private static final int PICK_CONTACT = 1;
	private static final int PICK_APP = 2;

	private Button clipboardButton;

	private final Button.OnClickListener contactListener = new Button.OnClickListener() {
		@Override
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_PICK,
					ContactsContract.Contacts.CONTENT_URI);
			intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
			startActivityForResult(intent, PICK_CONTACT);
		}
	};

	private final Button.OnClickListener bookmarkListener = new Button.OnClickListener() {
		@Override
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_PICK);
			intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
			intent.setClassName(ShareActivity.this,
					BookmarkPickerActivity.class.getName());
			startActivityForResult(intent, PICK_BOOKMARK);
		}
	};

	private final Button.OnClickListener appListener = new Button.OnClickListener() {
		@Override
		public void onClick(View v) {
			Intent intent = new Intent(Intent.ACTION_PICK);
			intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
			intent.setClassName(ShareActivity.this,
					AppPickerActivity.class.getName());
			startActivityForResult(intent, PICK_APP);
		}
	};

	private final Button.OnClickListener clipboardListener = new Button.OnClickListener() {
		@Override
		public void onClick(View v) {
			ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
			// Should always be true, because we grey out the clipboard button
			// in onResume() if it's empty
			if (clipboard.hasText()) {
				launchSearch(clipboard.getText().toString());
			}
		}
	};

	private final View.OnKeyListener textListener = new View.OnKeyListener() {
		@Override
		public boolean onKey(View view, int keyCode, KeyEvent event) {
			if (keyCode == KeyEvent.KEYCODE_ENTER
					&& event.getAction() == KeyEvent.ACTION_DOWN) {
				String text = ((TextView) view).getText().toString();
				if (text != null && text.length() > 0) {
					launchSearch(text);
				}
				return true;
			}
			return false;
		}
	};

	private void launchSearch(String text) {
		Intent intent = new Intent(Intents.Encode.ACTION);
		intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
		intent.putExtra(Intents.Encode.TYPE, Contents.Type.TEXT);
		intent.putExtra(Intents.Encode.DATA, text);
		intent.putExtra(Intents.Encode.FORMAT, BarcodeFormat.QR_CODE.toString());
		startActivity(intent);
	}

	@Override
	public void onCreate(Bundle icicle) {
		super.onCreate(icicle);
		setContentView(R.layout.share);

		findViewById(R.id.share_contact_button).setOnClickListener(
				contactListener);
		findViewById(R.id.share_bookmark_button).setOnClickListener(
				bookmarkListener);
		findViewById(R.id.share_app_button).setOnClickListener(appListener);
		clipboardButton = (Button) findViewById(R.id.share_clipboard_button);
		clipboardButton.setOnClickListener(clipboardListener);
		findViewById(R.id.share_text_view).setOnKeyListener(textListener);
	}

	@Override
	protected void onResume() {
		super.onResume();

		ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
		if (clipboard.hasText()) {
			clipboardButton.setEnabled(true);
			clipboardButton.setText(R.string.button_share_clipboard);
		} else {
			clipboardButton.setEnabled(false);
			clipboardButton.setText(R.string.button_clipboard_empty);
		}
	}

	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent intent) {
		if (resultCode == RESULT_OK) {
			switch (requestCode) {
			case PICK_BOOKMARK:
			case PICK_APP:
				showTextAsBarcode(intent
						.getStringExtra(Browser.BookmarkColumns.URL));
				break;
			case PICK_CONTACT:
				// Data field is content://contacts/people/984
				showContactAsBarcode(intent.getData());
				break;
			}
		}
	}

	private void showTextAsBarcode(String text) {
		Log.i(TAG, "Showing text as barcode: " + text);
		if (text == null) {
			return; // Show error?
		}
		Intent intent = new Intent(Intents.Encode.ACTION);
		intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
		intent.putExtra(Intents.Encode.TYPE, Contents.Type.TEXT);
		intent.putExtra(Intents.Encode.DATA, text);
		intent.putExtra(Intents.Encode.FORMAT, BarcodeFormat.QR_CODE.toString());
		startActivity(intent);
	}

	/**
	 * Takes a contact Uri and does the necessary database lookups to retrieve
	 * that person's info, then sends an Encode intent to render it as a QR
	 * Code.
	 * 
	 * @param contactUri
	 *            A Uri of the form content://contacts/people/17
	 */
	private void showContactAsBarcode(Uri contactUri) {
		Log.i(TAG, "Showing contact URI as barcode: " + contactUri);
		if (contactUri == null) {
			return; // Show error?
		}
		ContentResolver resolver = getContentResolver();
		Bundle bundle = new Bundle();

		Cursor cursor;
		try {
			// We're seeing about six reports a week of this exception although
			// I don't understand why.
			cursor = resolver.query(contactUri, null, null, null, null);
		} catch (IllegalArgumentException e) {
			return;
		}
		if (cursor == null) {
			return;
		}

		String id;
		String name;
		boolean hasPhone;
		try {
			if (!cursor.moveToFirst()) {
				return;
			}

			id = cursor.getString(cursor.getColumnIndex(BaseColumns._ID));
			name = cursor.getString(cursor
					.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
			hasPhone = cursor
					.getInt(cursor
							.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)) > 0;

		} finally {
			cursor.close();
		}

		// Don't require a name to be present, this contact might be just a
		// phone number.
		if (name != null && name.length() > 0) {
			bundle.putString(ContactsContract.Intents.Insert.NAME,
					massageContactData(name));
		}

		if (hasPhone) {
			Cursor phonesCursor = resolver.query(
					ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
					ContactsContract.CommonDataKinds.Phone.CONTACT_ID + '='
							+ id, null, null);
			if (phonesCursor != null) {
				try {
					int foundPhone = 0;
					int phonesNumberColumn = phonesCursor
							.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
					while (phonesCursor.moveToNext()
							&& foundPhone < Contents.PHONE_KEYS.length) {
						String number = phonesCursor
								.getString(phonesNumberColumn);
						bundle.putString(Contents.PHONE_KEYS[foundPhone],
								massageContactData(number));
						foundPhone++;
					}
				} finally {
					phonesCursor.close();
				}
			}
		}

		Cursor methodsCursor = resolver.query(
				ContactsContract.CommonDataKinds.StructuredPostal.CONTENT_URI,
				null,
				ContactsContract.CommonDataKinds.StructuredPostal.CONTACT_ID
						+ '=' + id, null, null);
		if (methodsCursor != null) {
			try {
				if (methodsCursor.moveToNext()) {
					String data = methodsCursor
							.getString(methodsCursor
									.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.FORMATTED_ADDRESS));
					bundle.putString(ContactsContract.Intents.Insert.POSTAL,
							massageContactData(data));
				}
			} finally {
				methodsCursor.close();
			}
		}

		Cursor emailCursor = resolver.query(
				ContactsContract.CommonDataKinds.Email.CONTENT_URI, null,
				ContactsContract.CommonDataKinds.Email.CONTACT_ID + '=' + id,
				null, null);
		if (emailCursor != null) {
			try {
				int foundEmail = 0;
				int emailColumn = emailCursor
						.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA);
				while (emailCursor.moveToNext()
						&& foundEmail < Contents.EMAIL_KEYS.length) {
					String email = emailCursor.getString(emailColumn);
					bundle.putString(Contents.EMAIL_KEYS[foundEmail],
							massageContactData(email));
					foundEmail++;
				}
			} finally {
				emailCursor.close();
			}
		}

		Intent intent = new Intent(Intents.Encode.ACTION);
		intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
		intent.putExtra(Intents.Encode.TYPE, Contents.Type.CONTACT);
		intent.putExtra(Intents.Encode.DATA, bundle);
		intent.putExtra(Intents.Encode.FORMAT, BarcodeFormat.QR_CODE.toString());

		Log.i(TAG, "Sending bundle for encoding: " + bundle);
		startActivity(intent);
	}

	private static String massageContactData(String data) {
		// For now -- make sure we don't put newlines in shared contact data. It
		// messes up
		// any known encoding of contact data. Replace with space.
		if (data.indexOf('\n') >= 0) {
			data = data.replace("\n", " ");
		}
		if (data.indexOf('\r') >= 0) {
			data = data.replace("\r", " ");
		}
		return data;
	}
}
